/Engine/Source/Runtime/Engine/Classes/GameFramework/CharacterMovementComponent.h
Use velocity requested by path following to compute a requested acceleration and speed. This does not affect the Acceleration member variable, as that is used to indicate input acceleration. This may directly affect current Velocity.
Whether there is a requested velocity and acceleration, resulting in valid OutAcceleration and OutRequestedSpeed values.
virtual bool ApplyRequestedMove ( float DeltaTime, float MaxAccel, float MaxSpeed, float Friction, float BrakingDeceleration, FVector & OutAcceleration, float & OutRequestedSpeed )